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--- ubuntu_cross_compiler [2021/01/20 09:04] – created nikolal
+++ ubuntu_cross_compiler [2022/09/19 11:34] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== Ubuntu cross compiling with libraries ======
-This guide describes how to cross compile for aarch64 targets with linking to external libraries from a Ubuntu host. The cross compilation is tested on a x86_64 host running Ubuntu 20.04, a target running Ubuntu aarch64 (Raspberry Pi 4B) and using the cmake build tool. It links external libraries by mounting the target filesystem over ssfs
+This guide describes how to cross compile for aarch64 targets with linking to external libraries from a Ubuntu host. The cross compilation is tested on a x86_64 host running Ubuntu 20.04, a target running Ubuntu Server 20.04 aarch64 (Raspberry Pi 4B) and using the cmake build tool. It links external libraries by mounting the target filesystem over ''sshfs''.
@@ Line 8: / Line 8: @@
 ===== On host =====
+  * Unordered List ItemInstall aarch64 compiler
+    * ''sudo apt-get install g++-aarch64-linux-gnu''
-sudo apt-get install g++-aarch64-linux-gnu
+  * Mount target filesystem
+    * ''sudo mkdir /mnt/rpi''
-Mount filesystem of rpi
+    * ''sudo sshfs -o allow_other,default_permissions [target_username]@[target_ip]:/ /mnt/rpi''
-sudo mkdir /mnt/rpi
-sudo sshfs -o allow_other,default_permissions ubuntu@192.168.2.171:/ /mnt/rpi
-Configure cmake to use toolchain file
-cmake -DCMAKE_TOOLCHAIN_FILE=../dune/toolchain.cmake ../dune
-make -j8
+  * Create ''toolchain.cmake'' file, see section below.
+  * Configure cmake to use toolchain file
+    * ''cmake -DCMAKE_TOOLCHAIN_FILE=..[toolchain_file] [project_location]''
+    * ''make -j[threads_to_use]''
 ==== Toolchain file ====
+  set(CMAKE_SYSTEM_NAME Linux)
+  set(CMAKE_SYSTEM_PROCESSOR aarch64)
-set(CMAKE_SYSTEM_NAME Linux)
+  set(tools /usr/bin)
-set(CMAKE_SYSTEM_PROCESSOR aarch64)
+  set(CMAKE_C_COMPILER ${tools}/aarch64-linux-gnu-gcc-9)
+  set(CMAKE_CXX_COMPILER ${tools}/aarch64-linux-gnu-g++-9)
-set(tools /usr/bin)
-set(CMAKE_C_COMPILER ${tools}/aarch64-linux-gnu-gcc-9)
+  set(CMAKE_SYSROOT /mnt/rpi)
-set(CMAKE_CXX_COMPILER ${tools}/aarch64-linux-gnu-g++-9)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_SYSROOT /mnt/rpi)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)